HTML The Definitive Guide (126 page)

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Authors: Chuck Musciano Bill Kennedy

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Function:

Define an inline frame within a text flow Attributes:

ALIGN MARGINWIDTH

CLASS NAME

FRAMEBORDER SCROLLING

HEIGHT SRC

ID STYLE

LONGDESC TITLE

MARGINHEIGHT WIDTH

End tag:

; never omitted

Contains:

body_content

Used in:

text

Use the src attribute with to specify the URL of the HTML document that occupies the inline frame. All of the other, optional attributes for the <iframe> tag, including the class, frameborder, id, longdesc, marginheight, marginwidth, name, scrolling, style, and title, behave exactly as the corresponding attributes for the <frame><br/><a>tag. [The <frame> Tag,<br/></a></p><p><a>12.4.1]<br/></a></p><p>Use the content of the <iframe> tag to provide information to users of browsers that do not support inline frames. Compliant browsers will ignore these contents whereas all other browsers ignore the <iframe> tag and therefore display its contents as if it were regular body content. For instance, use the <iframe> content to explain to non-Internet Explorer users what they are missing: ...other document content<br/></p><p><iframe src="sidebar.html" width=75 height=200 align=right> Your browser does not support inline frames. To view this <a >document</a> correctly, you'll need a copy of Internet Explorer.<br/></p><p>

...subsequent document content

In this example, we let the user know that they were accessing an unsupported feature, and provided a link to the missing content.

12.6.1.1 The align attribute

Like the align attribute for the

tag, this inline frame attribute lets you control where the frame gets placed inline with the adjacent text or moved to the edge of the document, allowing text to flow around the frame.

For inline alignment, use top, middle, or bottom as the value of this attribute. The frame will be aligned with the top, middle, or bottom of the adjacent text, respectively.

To allow text to flow around the inline frame, use the left or right values for this attribute. The frame will be moved to the left or right edge of the text flow, respectively, and the remaining content of the document will be flowed around the frame. A value of center places the inline frame in the middle of the display, with text flowing above and below.

12.6.1.2 The height and width attributes
Currently, Internet Explorer puts the contents of an inline frame into a predefined, 150-pixel-tall, 300-pixel-wide box. Use the height and width attributes with values as the number of pixels to change those dimensions.

12.6.2 Using Inline Frames

Although you probably will shy away from them for most of your web pages (at least until most browsers become HTML 4.0-compliant), inline frames can be useful, particularly for providing information related to the current document being viewed, similar to the sidebar articles you'd find in a conventional printed publication.

Except for their location within conventional document content, inline frames are treated exactly like regular frames. You can load other documents into the inline frame using its name (see following section) and link to other documents from within the inline frame.

12.5 The